MCP1252DM-BKLT Microchip Technology, MCP1252DM-BKLT Datasheet

BOARD DEMO FOR MCP1252

MCP1252DM-BKLT

Manufacturer Part Number
MCP1252DM-BKLT
Description
BOARD DEMO FOR MCP1252
Manufacturer
Microchip Technology
Datasheets

Specifications of MCP1252DM-BKLT

Current - Output / Channel
120mA
Outputs And Type
1, Non-Isolated
Features
Short-Circuit and Thermal Protection, Shutdown
Voltage - Input
2 ~ 5.5V
Utilized Ic / Part
MCP1252
Processor To Be Evaluated
MCP1252
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Features
• Inductorless, Buck/Boost, DC/DC Converter
• Low Power: 80 µA (Typical)
• High Output Voltage Accuracy:
• 120 mA Output Current
• Wide Operating Temperature Range:
• Thermal Shutdown and Short-Circuit Protection
• Uses Small Ceramic Capacitors
• Switching Frequency:
• Low Power Shutdown Mode: 0.1 µA (Typical)
• Shutdown Input Compatible with 1.8V Logic
• V
• Selectable Output Voltage (3.3V or 5.0V) or
• Space-saving, 8-Lead MSOP
• Soft-Start Circuitry to Minimize In-Rush Current
Applications
• White LED Backlighting
• Color Display Bias
• Local 3V-to-5V Conversions
• Flash Memory Supply Voltage
• SIM Interface Supply for GSM Phones
• Smart Card Readers
• PCMCIA Local 5V Supplies
M
- ±2.5% (V
- -40°C to +85°C
- MCP1252: 650 kHz
- MCP1253: 1 MHz
Adjustable Output Voltage
2002 Microchip Technology Inc.
IN
Range: 2.0V to 5.5V
Low Noise, Positive-Regulated Charge Pump
OUT
Fixed)
Description
The MCP1252/3 are inductorless, positive-regulated
charge pump DC/DC converters. The devices generate
a regulated fixed (3.3V or 5.0V) or adjustable output
voltage. They are specifically designed for applications
requiring low noise and high efficiency and are able to
deliver up to 120 mA output current. The devices allow
the input voltage to be lower or higher than the output
voltage, by automatically switching between buck/
boost operation.
The MCP1252 has a switching frequency of 650 kHz,
avoiding interference with sensitive IF bands. The
MCP1253 has a switching frequency of 1 MHz and
allows the use of smaller capacitors than the
MCP1252, thus saving board space and cost.
Both devices feature a power-good output that can be
used to detect out-of-regulation conditions. Extremely
low supply current and low external parts count (three
capacitors) make these devices ideal for small, battery-
powered applications. A shutdown mode is also pro-
vided for further power reduction. The MCP1252 and
MCP1253 feature thermal and short-circuit protection
and are offered in space-saving, 8-lead, MSOP
packages.
Package Types
MSOP (FIXED)
MSOP (ADJUSTABLE)
PGOOD
PGOOD
V
GND
MCP1252/3
V
OUT
GND
V
OUT
V
IN
IN
1
2
3
4
1
2
3
4
MCP1252
MCP1253
MCP1252
MCP1253
5
7
6
8
7
6
5
8
DS21752A-page 1
SELECT
SHDN
C+
C-
FB
SHDN
C+
C-

Related parts for MCP1252DM-BKLT

MCP1252DM-BKLT Summary of contents

Page 1

... Local 3V-to-5V Conversions • Flash Memory Supply Voltage • SIM Interface Supply for GSM Phones • Smart Card Readers • PCMCIA Local 5V Supplies 2002 Microchip Technology Inc. MCP1252/3 Description The MCP1252/3 are inductorless, positive-regulated charge pump DC/DC converters. The devices generate a regulated fixed (3 ...

Page 2

... MCP1252/3 Functional Block Diagram PGOOD V OUT V IN GND PGOOD V OUT V IN GND DS21752A-page 2 MCP1252-33X50 MCP1253-33X50 140 k - 173 100 1.21V + - + 200 mV Switch Control MCP1252-ADJ MCP1253-ADJ - + 1.21V + - + 200 mV Switch Control SELECT SHDN SHDN C+ C- 2002 Microchip Technology Inc. ...

Page 3

... Supply Current I Output Short-Circuit Current I Shutdown Current I SHDN Power Efficiency SHDN Logic Input Voltage Low V SHDN Logic Input Voltage High V PGOOD Threshold Voltage V PGOOD Hysteresis V 2002 Microchip Technology Inc. PIN FUNCTION TABLE Name PGOOD V OUT V + 0.3V GND C- C+ SHDN SELECT 4 kV ...

Page 4

... Conditions kHz MCP1252 kHz MCP1253 mV MCP1252 p-p mV MCP1253 p-p µsec SELECT = V IN µsec SELECT = GND V = 3.6V mA, IN OUT SHDN = V , IH(MIN) V from 0 to 90% Nominal OUT Regulated Output Voltage Conditions °C °C °C Single-Layer SEMI G42-88 Board, Natural Convection 2002 Microchip Technology Inc. ...

Page 5

... FIGURE 2-2: Output Voltage vs. Supply Voltage (MCP1252-33X50). 3.02 3. 3.00 MCP1252-ADJ 120 mA V 2.99 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Supply Voltage (V) FIGURE 2-3: Output Voltage vs. Supply Voltage (MCP1252-ADJ). 2002 Microchip Technology Inc. = 3.6V 25° µ OUT 100 5.0V 0 2.0 5.0 5 ...

Page 6

... X7R ceramic. FLY 2.3V IN MCP1253-33X50 SELECT = GND V = 5.0V OUT OUT 110 125 Temperature (°C) Quiescent Current vs 2.7V MCP1252-33X50 = 2.3V IN SELECT = GND V = 5.0V OUT OUT 110 125 Temperature (°C) Quiescent Current vs. Load Transient Response. 2002 Microchip Technology Inc. ...

Page 7

... SELECT = OUT 0 2.0 2.5 3.0 3.5 4.0 4.5 Supply Voltage (V) FIGURE 2-14: Output Voltage Ripple vs. Supply Voltage (MCP1252-33X50). FIGURE 2-15: Start-Up (MCP1252-33X50). 2002 Microchip Technology Inc. = 3.6V 25° 10mF OUT = 5.0V 5.0 5.5 6.0 FIGURE 2-16: Time 3.3V 5.0 5.5 6.0 FIGURE 2-17: Time ...

Page 8

... MCP1252-33X50, MCP1253-33X50: SELECT: Select Input Pin. Connect SELECT to V SELECT to GND for a 5.0V fixed output. MCP1252-ADJ, MCP1253-ADJ: FB: Feedback Pin. A resistor divider connected to this pin determines the adjustable V OUT ) OUT ) IN for 3.3V fixed output. Connect IN value (1.5V to 5.5V). 2002 Microchip Technology Inc. ...

Page 9

... The devices automatically transition between buck or boost operation. This provides a low-cost, compact and simple solution for step-down/step-up DC/DC conver- sion. This is especially true for battery-operated appli- cations that require a fixed output above or below the input. 2002 Microchip Technology Inc. No and and the ...

Page 10

... To PICmicro SHDN Microcontroller GND µF FLY µ µF OUT R = 100 k PU Typical Circuit Configuration MCP1252-ADJ 6 C+ +4. OUT OUT PGOOD PGOOD Flag 8 ® PICmicro 7 SHDN Microcontroller GND µF FLY µ µF OUT V = 1.21V ( 100 k OUT 23 Typical Circuit Configuration 2002 Microchip Technology Inc. ...

Page 11

... OUT V is the internal regulation voltage, nominally 1.21V FB 2002 Microchip Technology Inc. Note that the tolerance of the external resistors will have an effect on the accuracy of the output voltage. For optimum results recommended that the external resistors have a tolerance no larger than 1%. ...

Page 12

... Cell 100 k 1 PWM Contrast Control DS21752A-page 12 1 µ OUT 10 µF 8 SHDN SELECT 4 PGOOD GND MCP1252-33X50 1 µ WHITE LEDS OUT 10 µF 8 SHDN SELECT 59 4 PGOOD GND MCP1252-ADJ 1 µ WHITE LEDS OUT µF 8 SHDN SELECT PGOOD GND MCP1252-ADJ 2002 Microchip Technology Inc. ...

Page 13

... In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line thus limiting the number of available characters for customer specific information. * Standard OTP marking consists of Microchip part number, year code, week code, and traceability code. 2002 Microchip Technology Inc. MCP1252/3 Example: 1252SX 233025 ...

Page 14

... B .010 .012 .016 MILLIMETERS* MIN NOM MAX 8 0.65 1.18 0.76 0.86 0.97 0.05 0.15 .5.08 4.67 4.90 2.90 3.00 3.10 2.90 3.00 3.10 0.40 0.55 0.70 0.90 0.95 1. 0.10 0.15 0.20 0.25 0.30 0. 2002 Microchip Technology Inc. ...

Page 15

... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2002 Microchip Technology Inc. MCP1252/3 Examples: a) ...

Page 16

... MCP1252/3 NOTES: DS21752A-page 16 2002 Microchip Technology Inc. ...

Page 17

... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...

Page 18

... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan Microchip Technology (Barbados) Inc., Taiwan Branch 11F-3, No ...

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